package com.itheima.servlet;

import com.itheima.bean.Student;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.BufferedWriter;
import java.io.FileWriter;
import java.io.IOException;

@WebServlet("/loginStudentServlet")
public class LoginStudentServlet extends HttpServlet {
    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
   //获取用户名和密码
        String username = req.getParameter("username");
        String password = req.getParameter("password");
        //判断用户名
        if (username == null || "".equals(username)) {
            resp.sendRedirect(req.getContextPath() + "/login.jsp");
            return;
        }

        //反之不为空  存入会话域
        req.getSession().setAttribute("username", username);
        //重定向
        resp.sendRedirect(req.getContextPath() + "/index.jsp");


    }



    @Override
    protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        doGet(req,resp);
    }
}
